Hi,
I wish to change a B4XComboBox text color from black to red to indicate to the user that the field has been changed by the user.
I do this by responding to the _SelectedIndexChanged event, However if I change the field once the changed is picked up by the listener and the _SelectedIndexChanged is called, however the color doesn't change. If I make another change to the combo selection the change calls the _SelectedIndexChanged and the color DOES change.
I thought maybe it had something to do with asynch events, but putting in sleep(0)'s didn't fix the problem.
I have attached simple example that exhibits this behaviour for both the B4X Combo and standard.
I guess the B4X box is a wrapper around the standard spinner so I think the problem is with the spinner
Has anybody come across this before/
Are there any fixes?
Best regards
Rob
I wish to change a B4XComboBox text color from black to red to indicate to the user that the field has been changed by the user.
I do this by responding to the _SelectedIndexChanged event, However if I change the field once the changed is picked up by the listener and the _SelectedIndexChanged is called, however the color doesn't change. If I make another change to the combo selection the change calls the _SelectedIndexChanged and the color DOES change.
I thought maybe it had something to do with asynch events, but putting in sleep(0)'s didn't fix the problem.
I have attached simple example that exhibits this behaviour for both the B4X Combo and standard.
I guess the B4X box is a wrapper around the standard spinner so I think the problem is with the spinner
Main Program:
#Region Project Attributes
#ApplicationLabel: B4A Example
#VersionCode: 1
#VersionName:
'SupportedOrientations possible values: unspecified, landscape or portrait.
#SupportedOrientations: unspecified
#CanInstallToExternalStorage: False
#End Region
#Region Activity Attributes
#FullScreen: False
#IncludeTitle: True
#End Region
'======================================================================================================
Sub Process_Globals
End Sub
'======================================================================================================
Sub Globals
'These global variables will be redeclared each time the activity is created.
Private acSpinPlantMonth As B4XComboBox
Private acSpinHarvestMonth As Spinner
End Sub
'======================================================================================================
Sub Activity_Create(FirstTime As Boolean)
Activity.LoadLayout("Layout")
Dim monthsList As List
monthsList.Initialize
monthsList.Add("Jan")
monthsList.Add("Feb") ...
... monthsList.Add("Dec")
monthsList.Add("All")
acSpinPlantMonth.SetItems(monthsList)
acSpinHarvestMonth.AddAll(monthsList)
End Sub
'======================================================================================================
Sub acSpinPlantMonth_SelectedIndexChanged (Index As Int)
Dim itemStr As String
itemStr = acSpinPlantMonth.GetItem(Index)
Log("Item Plant Month - " & itemStr)
setSpinGroupColor(acSpinPlantMonth, Colors.Red, 0xFFFFFFFF)
End Sub
'======================================================================================================
Sub setSpinGroupColor(comboBoxArg As B4XComboBox, textColorArg As Int, backGroundArg As Int)
Dim spnr As Spinner = comboBoxArg.cmbBox
spnr.TextColor = textColorArg
spnr.DropdownBackgroundColor = backGroundArg
spnr.DropdownTextColor = xui.Color_Black
End Sub
'======================================================================================================
Sub acSpinHarvestMonth_ItemClick (Index As Int, Value As Object)
Dim itemStr As String
itemStr = acSpinHarvestMonth.SelectedItem
Log("Item Harv Month - " & itemStr)
acSpinHarvestMonth.TextColor = Colors.Red
acSpinHarvestMonth.DropdownBackgroundColor = Colors.White
acSpinHarvestMonth.DropdownTextColor = xui.Color_Black
End SubHas anybody come across this before/
Are there any fixes?
Best regards
Rob